Most of us are familiar with the "accordion-style" navigation bar on the left side of Outlook 2003. It has buttons like Calendar, Tasks, Mail, etc, and clicking on one of those buttons opens up a browser pane with the list of common folders in that section.
Using C++ or Delphi, I'd like to write a plugin that adds a new section to the navigation pane. Does anyone know where to start?
I found a few postings using google that say things like, "It's impossible but if you get add-in express then it's possible" (eg. http://social.msdn.microsoft.com/Forums/en-US/vsto/thread/a3517364-b1af-4583-966a-61717afa1028/), which sounds to me like it's possible, not impossible :) Where do I look?